NPPES file of Aug 9, 2026

Margaret Jane Blayney, MD

Gastroenterology Physician · East Lansing, MI

Margaret Jane Blayney, MD is a gastroenterology physician with a practice address in East Lansing, Michigan, and NPI 1629413018, issued on Apr 30, 2013. Check the license (Michigan 4301500792, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1629413018
Name
Margaret Jane Blayney
Credential
MD
Primary taxonomy
Gastroenterology Physician 207RG0100X
License number
4301500792 MI
Self-reported in NPPES; status is on the state search
Practice location
1650 Ramblewood Dr Ste 100, East Lansing, MI 48823
Phone
(517) 332-1200
Enumerated
Apr 30, 2013
Record last updated
Mar 3, 2026
Fax
(517) 351-7122
Medicare enrollment
Enrolled (PECOS I20191029001453); accepts Medicare assignment
Medical or professional school
University Of Michigan Medical School, 2013
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 1650 Ramblewood Dr Ste 100

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Matthew Dimagno, MDGastroenterology Physician1720160252
  2. Catherine Dobernick, PAPhysician Assistant1932387826
  3. Jannel Lee-Allen, M.D.Gastroenterology Physician1700240819
  4. Jonathan Thelen, PA-CPhysician Assistant1760614101

Verify Margaret Jane Blayney in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
    Search for license 4301500792
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Michigan license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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12% more Medicare Part D claims than the average gastroenterology physician in 2024

912 Medicare Part D claims for 305 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims.

  1. Margaret Blayney912
  2. Specialty average811

Most prescribed

  1. Omeprazole120 claims
  2. Peg 3350-Electrolyte85 claims
  3. Pantoprazole Sodium68 claims
  4. Linzess61 claims
  5. Buspirone Hcl43 claims
  6. Motegrity43 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Bills Medicare through one group practice

  1. Regents OF The University OF MichiganAnn Arbor, MI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Gastroenterology Physician providers in Michigan

There are 550 gastroenterology physician records in Michigan.

Other gastroenterology physician records in Michigan

  1. Amir Abadir, M.D.Lansing, MI1184050098
  2. Adil Abdalla, M.D.Flint, MI1245215292
  3. Mohamed AbdallahRoyal Oak, MI1265966584
  4. Mohannad Abousaleh, MDYpsilanti, MI1265828115
  5. Ahmad Aburashed, M.D.Southfield, MI1487671442
  6. Megan Adams, MDAnn Arbor, MI1396973269
  7. Larry Adler, M.D.Ypsilanti, MI1356320634
  8. Nishant Aggarwal, MDRoyal Oak, MI1497327266
  9. Radhika Aggarwal, MDDetroit, MI1700084712
  10. Fariah Ahmad, MDLansing, MI1346770401

Common questions

What is Margaret Jane Blayney, MD's NPI number?

Margaret Jane Blayney, MD's National Provider Identifier (NPI) is 1629413018, issued on Apr 30, 2013. An NPI identifies a provider in billing; it is not a license.

Where is Margaret Jane Blayney, MD located?

The NPPES record lists a practice address at 1650 Ramblewood Dr Ste 100, East Lansing, MI, 48823. Phone: (517) 332-1200. Providers update this record themselves, so call before visiting.

How can I verify Margaret Jane Blayney, MD's license?

NPPES lists Michigan license number 4301500792, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Margaret Jane Blayney, MD prescribe under Medicare Part D?

In 2024, Margaret Jane Blayney, MD had 912 Medicare Part D claims for 305 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.